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COXETER GROUP

  • Coxeter group
  • Group that admits a formal description in terms of reflections

    In mathematics, a Coxeter group, named after H. S. M. Coxeter, is an abstract group that admits a formal description in terms of reflections (or kaleidoscopic

    Coxeter group

    Coxeter_group

  • Weyl group
  • Subgroup of a root system's isometry group

    reflection group. In fact it turns out that most finite reflection groups are Weyl groups. Abstractly, Weyl groups are finite Coxeter groups, and are important

    Weyl group

    Weyl group

    Weyl_group

  • Coxeter element
  • Concept in geometry

    In mathematics, a Coxeter element is an element of an irreducible Coxeter group which is a product of all simple reflections. The product depends on the

    Coxeter element

    Coxeter_element

  • Point group
  • Group of geometric symmetries with at least one fixed point

    n Coxeter group has n mirrors and is represented by a Coxeter–Dynkin diagram. Coxeter notation offers a bracketed notation equivalent to the Coxeter diagram

    Point group

    Point group

    Point_group

  • Iwahori–Hecke algebra
  • Deformation of the group algebra of a Coxeter group

    deformation of the group algebra of a Coxeter group. The Hecke algebra can also be viewed as a q-analog of the group algebra of a Coxeter group. Hecke algebras

    Iwahori–Hecke algebra

    Iwahori–Hecke_algebra

  • Isomorphism problem of Coxeter groups
  • Unsolved problem in mathematics Given two Coxeter groups Γ 1 {\displaystyle \Gamma _{1}} and Γ 2 {\displaystyle \Gamma _{2}} , decide whether W ( Γ 1 )

    Isomorphism problem of Coxeter groups

    Isomorphism_problem_of_Coxeter_groups

  • Coxeter notation
  • Classification system for symmetry groups in geometry

    Coxeter notation (also Coxeter symbol) is a system of classifying symmetry groups, describing the angles between fundamental reflections of a Coxeter

    Coxeter notation

    Coxeter notation

    Coxeter_notation

  • Point groups in three dimensions
  • Groups of point isometries in 3 dimensions

    passing through the same point are the finite Coxeter groups, represented by Coxeter notation. The point groups in three dimensions are widely used in chemistry

    Point groups in three dimensions

    Point_groups_in_three_dimensions

  • Coxeter–Dynkin diagram
  • Pictorial representation of symmetry

    Coxeter–Dynkin diagram (or Coxeter diagram, Coxeter graph) is a graph with numerically labeled edges (called branches) representing a Coxeter group or

    Coxeter–Dynkin diagram

    Coxeter–Dynkin diagram

    Coxeter–Dynkin_diagram

  • Dynkin diagram
  • Pictorial representation of symmetry

    special kind of Coxeter diagram), the Weyl group (a concrete reflection group), or the abstract Coxeter group. Although the Weyl group is abstractly isomorphic

    Dynkin diagram

    Dynkin diagram

    Dynkin_diagram

  • Harold Scott MacDonald Coxeter
  • Canadian geometer (1907–2003)

    geometry and group theory are named after him, including the Coxeter graph, Coxeter groups, Coxeter's loxodromic sequence of tangent circles, Coxeter–Dynkin

    Harold Scott MacDonald Coxeter

    Harold Scott MacDonald Coxeter

    Harold_Scott_MacDonald_Coxeter

  • Coxeter complex
  • Simplicial complex

    mathematics, the Coxeter complex, named after H. S. M. Coxeter, is a geometrical structure (a simplicial complex) associated to a Coxeter group. Coxeter complexes

    Coxeter complex

    Coxeter_complex

  • E8 polytope
  • be visualized as symmetric orthographic projections in Coxeter planes of the E8 Coxeter group, and other subgroups. Symmetric orthographic projections

    E8 polytope

    E8 polytope

    E8_polytope

  • Hyperoctahedral group
  • Group of symmetries of an n-dimensional hypercube

    The family of hyperoctahedral groups forms type B in the classification of finite Coxeter groups. The hyperoctahedral groups were named by Alfred Young in

    Hyperoctahedral group

    Hyperoctahedral group

    Hyperoctahedral_group

  • Orthogonal group
  • Type of group in mathematics

    groups in two dimensions. Other finite subgroups include: Permutation matrices (the Coxeter group An) Signed permutation matrices (the Coxeter group Bn);

    Orthogonal group

    Orthogonal group

    Orthogonal_group

  • Complex reflection group
  • Concept in mathematics

    symmetric group of permutations, the dihedral groups, and more generally all finite real reflection groups (the Coxeter groups or Weyl groups, including

    Complex reflection group

    Complex_reflection_group

  • Convex uniform honeycomb
  • Spatial tiling of convex uniform polyhedra

    other forms based on the ring patterns of the Coxeter diagram. The fundamental infinite Coxeter groups for 3-space are: The C ~ 3 {\displaystyle {\tilde

    Convex uniform honeycomb

    Convex uniform honeycomb

    Convex_uniform_honeycomb

  • Icosahedral symmetry
  • 3D symmetry group

    of 120. The full symmetry group is the Coxeter group of type H3. It may be represented by Coxeter notation [5,3] and Coxeter diagram . The set of rotational

    Icosahedral symmetry

    Icosahedral symmetry

    Icosahedral_symmetry

  • Uniform honeycombs in hyperbolic space
  • Tiling of hyperbolic 3-space by uniform polyhedra

    polyhedral cells. In 3-dimensional hyperbolic space there are nine Coxeter group families of compact convex uniform honeycombs, generated as Wythoff

    Uniform honeycombs in hyperbolic space

    Uniform honeycombs in hyperbolic space

    Uniform_honeycombs_in_hyperbolic_space

  • Uniform 6-polytope
  • Uniform 6-dimensional polytope

    from a small set of symmetry groups. These construction operations are represented by the permutations of rings of the Coxeter-Dynkin diagrams. Each combination

    Uniform 6-polytope

    Uniform 6-polytope

    Uniform_6-polytope

  • Artin–Tits group
  • Family of infinite discrete groups

    with Coxeter groups. Examples are free groups, free abelian groups, braid groups, and right-angled Artin–Tits groups, among others. The groups are named

    Artin–Tits group

    Artin–Tits_group

  • Wallpaper group
  • Classification of a two-dimensional repetitive pattern

    Coxeter notation (rectangular): [∞,2,∞] or [∞]×[∞] Coxeter notation (square): [4,1+,4] or [1+,4,4,1+] Lattice: rectangular Point group: D2 The group pmm

    Wallpaper group

    Wallpaper group

    Wallpaper_group

  • 5-cell
  • Four-dimensional analogue of the tetrahedron

    pentachoron, pentatope, pentahedroid, tetrahedral pyramid, or 4-simplex (Coxeter's α4 polytope), the simplest possible convex 4-polytope, and is analogous

    5-cell

    5-cell

    5-cell

  • Affine symmetric group
  • Number line and triangular tiling's symmetry mathematical structure

    Coxeter groups, so the affine symmetric groups are Coxeter groups, with the s i {\displaystyle s_{i}} as their Coxeter generating sets. Each Coxeter group

    Affine symmetric group

    Affine symmetric group

    Affine_symmetric_group

  • Uniform tilings in hyperbolic plane
  • Symmetric subdivision in hyperbolic geometry

    (7 3 2) triangle group, Coxeter group [7,3], orbifold (*732) contains these uniform tilings: The (8 3 2) triangle group, Coxeter group [8,3], orbifold

    Uniform tilings in hyperbolic plane

    Uniform_tilings_in_hyperbolic_plane

  • Symmetric group
  • Type of group in abstract algebra

    theory of Coxeter groups, the symmetric group is the Coxeter group of type An and occurs as the Weyl group of the general linear group. In combinatorics

    Symmetric group

    Symmetric group

    Symmetric_group

  • Parabolic subgroup of a reflection group
  • Mathematical group

    The symmetric group belongs to a larger family of reflection groups called Coxeter groups, each of which comes with a special generating set S (generalizing

    Parabolic subgroup of a reflection group

    Parabolic_subgroup_of_a_reflection_group

  • Kazhdan–Lusztig polynomial
  • Integral polynomial

    indexed by pairs of elements y, w of a Coxeter group W, which can in particular be the Weyl group of a Lie group. In the spring of 1978 Kazhdan and Lusztig

    Kazhdan–Lusztig polynomial

    Kazhdan–Lusztig_polynomial

  • 5-cube
  • 5-dimensional hypercube

    x1, x2, x3, x4) with −1 < xi < 1 for all i. n-cube Coxeter plane projections in the Bk Coxeter groups project into k-cube graphs, with power of two vertices

    5-cube

    5-cube

  • Gosset–Elte figures
  • Group of irregular uniform polytopes

    In geometry, the Gosset–Elte figures, named by Coxeter after Thorold Gosset and E. L. Elte, are a group of uniform polytopes which are not regular, generated

    Gosset–Elte figures

    Gosset–Elte figures

    Gosset–Elte_figures

  • E9 honeycomb
  • hyperbolic group, so either facets or vertex figures will not be bounded. E10 is last of the series of Coxeter groups with a bifurcated Coxeter-Dynkin diagram

    E9 honeycomb

    E9_honeycomb

  • 2 21 polytope
  • Uniform 6-polytope

    It is also called the Schläfli polytope. Its Coxeter symbol is 221, describing its bifurcating Coxeter-Dynkin diagram, with a single ring on the end

    2 21 polytope

    2 21 polytope

    2_21_polytope

  • 3 21 polytope
  • Uniform 7-dimensional polytope

    symmetry of the E7 group. It was discovered by Thorold Gosset, published in his 1900 paper. He called it a 7-ic semi-regular figure. Its Coxeter symbol is 321

    3 21 polytope

    3 21 polytope

    3_21_polytope

  • Longest element of a Coxeter group
  • Unique element of maximal length in a finite Coxeter group

    mathematics, the longest element of a Coxeter group is the unique element of maximal length in a finite Coxeter group with respect to the chosen generating

    Longest element of a Coxeter group

    Longest_element_of_a_Coxeter_group

  • Bimonster group
  • Mathematical group

    Bi=M\wr \mathbb {Z} _{2}.\,} The Bimonster is also a quotient of the Coxeter group corresponding to the Dynkin diagram Y555, a Y-shaped graph with 16 nodes:

    Bimonster group

    Bimonster_group

  • Building (mathematics)
  • Mathematical structure

    defining a building Δ is a Coxeter group W, which determines a highly symmetrical simplicial complex Σ = Σ(W, S), called the Coxeter complex. A building Δ

    Building (mathematics)

    Building_(mathematics)

  • Uniform 7-polytope
  • Seven-dimensional geometric object

    for Coxeter plane graphs of these polytopes. The E7 Coxeter group has order 2,903,040. There are 127 forms based on all permutations of the Coxeter-Dynkin

    Uniform 7-polytope

    Uniform 7-polytope

    Uniform_7-polytope

  • 4 21 polytope
  • Polytope in 8-dimensional geometry

    symmetry of the E8 group. It was discovered by Thorold Gosset, published in his 1900 paper. He called it an 8-ic semi-regular figure. Its Coxeter symbol is 421

    4 21 polytope

    4 21 polytope

    4_21_polytope

  • Order-7-3 triangular honeycomb
  • Schläfli symbol {3,71,1}, Coxeter diagram, , with alternating types or colors of order-7 triangular tiling cells. In Coxeter notation the half symmetry

    Order-7-3 triangular honeycomb

    Order-7-3_triangular_honeycomb

  • Regular polytope
  • Polytope with highest degree of symmetry

    by their isometry group. These are finite Coxeter groups, but not every finite Coxeter group may be realised as the isometry group of a regular polytope

    Regular polytope

    Regular polytope

    Regular_polytope

  • Point groups in four dimensions
  • four-dimensional crystal classes 1985 H.S.M. Coxeter, Regular and Semi-Regular Polytopes II, Coxeter notation for 4D point groups 2003 John Conway and Smith, On Quaternions

    Point groups in four dimensions

    Point groups in four dimensions

    Point_groups_in_four_dimensions

  • Bitruncated cubic honeycomb
  • Space-filling tessellation

    {A}}_{3}} Coxeter group. This honeycomb has four uniform constructions, with the truncated octahedral cells having different Coxeter groups and Wythoff

    Bitruncated cubic honeycomb

    Bitruncated cubic honeycomb

    Bitruncated_cubic_honeycomb

  • 1 22 polytope
  • Uniform 6-polytope

    from the E6 group. It was first published in E. L. Elte's 1912 listing of semiregular polytopes, named as V72 (for its 72 vertices). Its Coxeter symbol is

    1 22 polytope

    1 22 polytope

    1_22_polytope

  • 5-simplex
  • Regular 5-polytope

    is one of 19 uniform polytera based on the [3,3,3,3] Coxeter group, all shown here in A5 Coxeter plane orthographic projections. (Vertices are colored

    5-simplex

    5-simplex

  • Binary icosahedral group
  • Nonabelian group of order 120

    icosahedral symmetry group Ih is the symmetry group of the 600-cell (also that of its dual, the 120-cell). Just as the former is the Coxeter group of type H3,

    Binary icosahedral group

    Binary_icosahedral_group

  • Reflection group
  • Discrete group type in group theory

    reflection group. Reflection groups also include Weyl groups and crystallographic Coxeter groups. While the orthogonal group is generated by reflections

    Reflection group

    Reflection_group

  • 2 31 polytope
  • Uniform Polytope

    uniform polytope, constructed from the E7 group. Its Coxeter symbol is 231, describing its bifurcating Coxeter-Dynkin diagram, with a single ring on the

    2 31 polytope

    2 31 polytope

    2_31_polytope

  • Tesseract
  • Four-dimensional analogue of the cube

    measure polytope, taken as a unit for hypervolume. Harold Scott MacDonald Coxeter labels it the γ4 polytope. The term hypercube without a dimension reference

    Tesseract

    Tesseract

    Tesseract

  • Stericated 6-simplexes
  • set of 35 uniform 6-polytopes based on the [3,3,3,3,3] Coxeter group, all shown here in A6 Coxeter plane orthographic projections. Klitzing, (x3o3o3o3x3o

    Stericated 6-simplexes

    Stericated 6-simplexes

    Stericated_6-simplexes

  • Coxeter matroid
  • Group-theoretic generalization of matroids

    In mathematics, Coxeter matroids are generalization of matroids depending on a choice of a Coxeter group W and a parabolic subgroup P. Ordinary matroids

    Coxeter matroid

    Coxeter_matroid

  • 6-cube
  • 6-dimensional hypercube

    Coxeter groups associated with the 6-cube, one regular, with the C6 or [4,3,3,3,3] Coxeter group, and a half symmetry (D6) or [33,1,1] Coxeter group.

    6-cube

    6-cube

    6-cube

  • 2 41 polytope
  • Uniform polytope in 8 dimensional geometry

    constructed within the symmetry of the E8 group. Its Coxeter symbol is 241, describing its bifurcating Coxeter-Dynkin diagram, with a single ring on the

    2 41 polytope

    2 41 polytope

    2_41_polytope

  • One-dimensional symmetry group
  • Symmetry group in 1D systems

    the affine Coxeter group [∞], or Coxeter-Dynkin diagram representing two reflections, and the translational symmetry as [∞]+, or Coxeter-Dynkin diagram

    One-dimensional symmetry group

    One-dimensional_symmetry_group

  • Tetrahedral-octahedral honeycomb
  • Quasiregular space-filling tesselation

    {\displaystyle {\tilde {A}}_{3}} Coxeter group. The symmetry can be multiplied by the symmetry of rings in the Coxeter–Dynkin diagrams: The cantic cubic

    Tetrahedral-octahedral honeycomb

    Tetrahedral-octahedral honeycomb

    Tetrahedral-octahedral_honeycomb

  • Regular skew apeirohedron
  • Infinite regular skew polyhedron

    Harold Scott MacDonald Coxeter derived a third, the mutetrahedron, and proved that these three were complete. Under Coxeter and Petrie's definition,

    Regular skew apeirohedron

    Regular skew apeirohedron

    Regular_skew_apeirohedron

  • Triangular tiling honeycomb
  • tilings around every edge. In Coxeter notation, the removal of the 3rd and 4th mirrors, [3,6,3*] creates a new Coxeter group [3[3,3]], , subgroup index 6

    Triangular tiling honeycomb

    Triangular tiling honeycomb

    Triangular_tiling_honeycomb

  • Uniform 10-polytope
  • Type of geometrical object

    symmetry can be generated by these three Coxeter groups, represented by permutations of rings of the Coxeter-Dynkin diagrams: Selected regular and uniform

    Uniform 10-polytope

    Uniform 10-polytope

    Uniform_10-polytope

  • Order-4 dodecahedral honeycomb
  • Regular tiling of hyperbolic 3-space

    the [5,3,4] Coxeter group family, including this regular form. There are eleven uniform honeycombs in the bifurcating [5,31,1] Coxeter group family, including

    Order-4 dodecahedral honeycomb

    Order-4 dodecahedral honeycomb

    Order-4_dodecahedral_honeycomb

  • 1 32 polytope
  • Uniform polytope

    uniform polytope, constructed from the E7 group. Its Coxeter symbol is 132, describing its bifurcating Coxeter-Dynkin diagram, with a single ring on the

    1 32 polytope

    1 32 polytope

    1_32_polytope

  • Paracompact uniform honeycombs
  • Tessellation of convex uniform polyhedron cells

    23 Coxeter group families of paracompact uniform honeycombs, generated as Wythoff constructions, and represented by ring permutations of the Coxeter diagrams

    Paracompact uniform honeycombs

    Paracompact_uniform_honeycombs

  • Pentagonal polytope
  • Regular polytope whose 2D form is a pentagon

    polytope in n dimensions constructed from the Hn Coxeter group. The family was named by H. S. M. Coxeter, because the two-dimensional pentagonal polytope

    Pentagonal polytope

    Pentagonal_polytope

  • E6 polytope
  • be visualized as symmetric orthographic projections in Coxeter planes of the E6 Coxeter group, and other subgroups. Symmetric orthographic projections

    E6 polytope

    E6 polytope

    E6_polytope

  • Uniform polyhedron
  • Isogonal polyhedron with regular faces

    symbol (3 3 2). It can also be represented by the Coxeter group A2 or [3,3], as well as a Coxeter diagram: . There are 24 triangles, visible in the faces

    Uniform polyhedron

    Uniform polyhedron

    Uniform_polyhedron

  • Stericated 5-simplexes
  • part of 19 uniform 5-polytopes based on the [3,3,3,3] Coxeter group, all shown here in A5 Coxeter plane orthographic projections. (Vertices are colored

    Stericated 5-simplexes

    Stericated 5-simplexes

    Stericated_5-simplexes

  • 63 (number)
  • Natural number

    generated from the abstract hypercubic B 6 {\displaystyle \mathrm {B_{6}} } Coxeter group (sometimes, the demicube is also included in this family), that is associated

    63 (number)

    63_(number)

  • Michael W. Davis
  • American mathematician (born 1949)

    is the author of two books that include The Geometry and Topology of Coxeter Groups and Multiaxial Actions on Manifolds. His notable contributions to the

    Michael W. Davis

    Michael W. Davis

    Michael_W._Davis

  • Uniform 8-polytope
  • Polytope contained by 7-polytope facets

    symmetry can be generated by these four Coxeter groups, represented by permutations of rings of the Coxeter-Dynkin diagrams: Selected regular and uniform

    Uniform 8-polytope

    Uniform 8-polytope

    Uniform_8-polytope

  • F4 (mathematics)
  • 52-dimensional exceptional simple Lie group

    Dynkin diagram for F4 is: . Its Weyl/Coxeter group G = W(F4) is the symmetry group of the 24-cell: it is a solvable group of order 1152. It has minimal faithful

    F4 (mathematics)

    F4 (mathematics)

    F4_(mathematics)

  • Icosahedral honeycomb
  • Regular tiling of hyperbolic 3-space

    composed of pentagons: There are nine uniform honeycombs in the [3,5,3] Coxeter group family, including this regular form as well as the bitruncated form

    Icosahedral honeycomb

    Icosahedral honeycomb

    Icosahedral_honeycomb

  • Order-5 cubic honeycomb
  • Regular tiling of hyperbolic 3-space

    hyperbolic space: There are fifteen uniform honeycombs in the [5,3,4] Coxeter group family, including the order-5 cubic honeycomb as the regular form: The

    Order-5 cubic honeycomb

    Order-5 cubic honeycomb

    Order-5_cubic_honeycomb

  • 1 42 polytope
  • Uniform 8 dimensional polytope

    constructed within the symmetry of the E8 group. Its Coxeter symbol is 142, describing its bifurcating Coxeter-Dynkin diagram, with a single ring on the

    1 42 polytope

    1 42 polytope

    1_42_polytope

  • Schläfli symbol
  • Notation for polytopes and tessellations

    instead [p,q,r,...]. Such groups are often named by the regular polytopes they generate. For example, [3,3] is the Coxeter group for reflective tetrahedral

    Schläfli symbol

    Schläfli symbol

    Schläfli_symbol

  • Matsumoto's theorem (group theory)
  • In group theory, Matsumoto's theorem, proved by Hideya Matsumoto (1964), gives conditions for two reduced words of a Coxeter group to represent the same

    Matsumoto's theorem (group theory)

    Matsumoto's_theorem_(group_theory)

  • Uniform 9-polytope
  • Type of geometric object

    symmetry can be generated by these three Coxeter groups, represented by permutations of rings of the Coxeter-Dynkin diagrams: Selected regular and uniform

    Uniform 9-polytope

    Uniform 9-polytope

    Uniform_9-polytope

  • Uniform tiling
  • Vertex-transitive tiling of the plane by regular polygons

    more details.) Coxeter groups for the plane define the Wythoff construction and can be represented by Coxeter-Dynkin diagrams: For groups with integer reflection

    Uniform tiling

    Uniform_tiling

  • Order-infinite-3 triangular honeycomb
  • Schläfli symbol {3,∞1,1}, Coxeter diagram, , with alternating types or colors of infinite-order triangular tiling cells. In Coxeter notation the half symmetry

    Order-infinite-3 triangular honeycomb

    Order-infinite-3_triangular_honeycomb

  • 6-orthoplex
  • Regular 6 dimensional polytope

    There are three Coxeter groups associated with the 6-orthoplex, one regular, dual of the hexeract with the C6 or [4,3,3,3,3] Coxeter group, and a half symmetry

    6-orthoplex

    6-orthoplex

    6-orthoplex

  • Uniform 5-polytope
  • Five-dimensional geometric shape

    from a small set of symmetry groups. These construction operations are represented by the permutations of rings of the Coxeter diagrams. Regular polytopes:

    Uniform 5-polytope

    Uniform 5-polytope

    Uniform_5-polytope

  • Pentellated 6-simplexes
  • Uniform 6-polytope

    set of 35 uniform 6-polytopes based on the [3,3,3,3,3] Coxeter group, all shown here in A6 Coxeter plane orthographic projections. Klitzing, (x3o3o3o3o3x

    Pentellated 6-simplexes

    Pentellated 6-simplexes

    Pentellated_6-simplexes

  • Order-5 dodecahedral honeycomb
  • Regular tiling of hyperbolic 3-space

    hemispherical cells. There are nine uniform honeycombs in the [5,3,5] Coxeter group family, including this regular form. Also the bitruncated form, t1,2{5

    Order-5 dodecahedral honeycomb

    Order-5 dodecahedral honeycomb

    Order-5_dodecahedral_honeycomb

  • Special unitary group
  • Group of unitary complex matrices with determinant of 1

    Weyl group or Coxeter group is the symmetric group Sn, the symmetry group of the (n − 1)-simplex. For a field F, the generalized special unitary group over

    Special unitary group

    Special unitary group

    Special_unitary_group

  • Order-8-3 triangular honeycomb
  • Schläfli symbol {3,81,1}, Coxeter diagram, , with alternating types or colors of order-8 triangular tiling cells. In Coxeter notation the half symmetry

    Order-8-3 triangular honeycomb

    Order-8-3_triangular_honeycomb

  • G2 (mathematics)
  • Simple Lie group; the automorphism group of the octonions

    and B is isomorphic to A₂. Its Weyl/Coxeter group G = W ( G 2 ) {\displaystyle G=W(G_{2})} is the dihedral group D 6 {\displaystyle D_{6}} of order 12

    G2 (mathematics)

    G2 (mathematics)

    G2_(mathematics)

  • Dihedral group of order 6
  • Non-commutative group with 6 elements

    second presentation means that the group is a Coxeter group. (In fact, all dihedral and symmetry groups are Coxeter groups.) With the generators a and b,

    Dihedral group of order 6

    Dihedral group of order 6

    Dihedral_group_of_order_6

  • Stericated 8-simplexes
  • Class of eight-dimensional polytopes

    gobcane) H.S.M. Coxeter: H.S.M. Coxeter, Regular Polytopes, 3rd edition, Dover, New York, 1973 Kaleidoscopes: Selected Writings of H.S.M. Coxeter, edited by

    Stericated 8-simplexes

    Stericated 8-simplexes

    Stericated_8-simplexes

  • 24-cell
  • Regular object in four dimensional geometry

     17–20, §10 The Coxeter Classification of Four-Dimensional Point Groups. Coxeter 1973, pp. 33–38, §3.1 Congruent transformations. Coxeter 1973, p. 138;

    24-cell

    24-cell

    24-cell

  • Eulerian number
  • Polynomial sequence

    the Coxeter group of Type A n − 1 {\displaystyle A_{n-1}} , the hyperoctahedral group of order n {\displaystyle n} is the Coxeter group of Type B n {\displaystyle

    Eulerian number

    Eulerian number

    Eulerian_number

  • 2 22 honeycomb
  • each of the three branches of the Coxeter diagram. ∪ ∪ = dual to . The E ~ 6 {\displaystyle {\tilde {E}}_{6}} group is related to the F ~ 4 {\displaystyle

    2 22 honeycomb

    2_22_honeycomb

  • 5
  • Natural number

    the group K5. There are five fundamental mirror symmetry point group families in 4-dimensions. There are also 5 compact hyperbolic Coxeter groups, or

    5

    5

  • Order-7 tetrahedral honeycomb
  • honeycomb, Schläfli symbol {3,(3,4,3)}, Coxeter diagram, , with alternating types or colors of tetrahedral cells. In Coxeter notation the half symmetry is [3

    Order-7 tetrahedral honeycomb

    Order-7_tetrahedral_honeycomb

  • Icosian
  • Specific set of Hamiltonian quaternions with the same symmetry as the 600-cell

    These 120 vectors form the vertices of a 600-cell, whose symmetry group is the Coxeter group H4 of order 14400. In addition, the 600 icosians of norm 2 form

    Icosian

    Icosian

  • Cantellated 8-simplexes
  • gatrene) H.S.M. Coxeter: H.S.M. Coxeter, Regular Polytopes, 3rd edition, Dover, New York, 1973 Kaleidoscopes: Selected Writings of H.S.M. Coxeter, edited by

    Cantellated 8-simplexes

    Cantellated 8-simplexes

    Cantellated_8-simplexes

  • Algebraic group
  • Algebraic variety with a group structure

    analogous results between algebraic groups and Coxeter groups – for instance, the number of elements of the symmetric group is n ! {\displaystyle n!} , and

    Algebraic group

    Algebraic group

    Algebraic_group

  • Gosset graph
  • Distance-regular graph with 56 vertices

    isomorphic to the Schläfli graph. The automorphism group of the Gosset graph is isomorphic to the Coxeter group E7 and hence has order 2903040. The Gosset 321

    Gosset graph

    Gosset graph

    Gosset_graph

  • Hexicated 7-simplexes
  • Type of 7-polytope

    guph). H.S.M. Coxeter: H.S.M. Coxeter, Regular Polytopes, 3rd edition, Dover, New York, 1973 Kaleidoscopes: Selected Writings of H.S.M. Coxeter, edited by

    Hexicated 7-simplexes

    Hexicated 7-simplexes

    Hexicated_7-simplexes

  • Uniform k 21 polytope
  • Geometric object

    from the En Coxeter group, and having only regular polytope facets. The family was named by their Coxeter symbol k21 by its bifurcating Coxeter–Dynkin diagram

    Uniform k 21 polytope

    Uniform_k_21_polytope

  • Truncated 5-simplexes
  • one of 19 uniform 5-polytopes based on the [3,3,3,3] Coxeter group, all shown here in A5 Coxeter plane orthographic projections. (Vertices are colored

    Truncated 5-simplexes

    Truncated 5-simplexes

    Truncated_5-simplexes

  • Finite type
  • Topics referred to by the same term

    type Coxeter group of finite type, a Coxeter group whose Schläfli matrix has only positive eigenvalues Coxeter matrix of finite type, a Coxeter matrix

    Finite type

    Finite_type

  • Runcinated 8-simplexes
  • a doubled symmetry, showing [18] order reflectional symmetry in the A8 Coxeter plane. Runcinated enneazetton Small prismated enneazetton (Acronym: spene)

    Runcinated 8-simplexes

    Runcinated 8-simplexes

    Runcinated_8-simplexes

  • 24-cell honeycomb honeycomb
  • 5-space order-4 24-cell honeycomb honeycomb. List of regular polytopes Coxeter, Regular Polytopes, 3rd. ed., Dover Publications, 1973. ISBN 0-486-61480-8

    24-cell honeycomb honeycomb

    24-cell_honeycomb_honeycomb

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COXETER GROUP

  • Marghoob
  • Boy/Male

    Arabic, Muslim

    Marghoob

    Agreeable; Desirable; Coveted

    Marghoob

  • Coulter
  • Boy/Male

    American, Australian, British, English, Irish

    Coulter

    Young Horse; Frisky; Part of a Plough

    Coulter

  • Cooter
  • Surname or Lastname

    English (Sussex)

    Cooter

    English (Sussex) : unexplained.

    Cooter

  • Marghoob
  • Boy/Male

    Muslim/Islamic

    Marghoob

    Desirable coveted, agreeable

    Marghoob

  • Marghuba |
  • Girl/Female

    Muslim

    Marghuba |

    Coveted, Desired

    Marghuba |

  • Colter
  • Boy/Male

    English American

    Colter

    Horse herdsman. young horse;frisky.

    Colter

  • Marghoob |
  • Boy/Male

    Muslim

    Marghoob |

    Desirable, Coveted, Pleasant

    Marghoob |

  • Marghub
  • Boy/Male

    Indian

    Marghub

    Desirable, Coveted, Pleasant

    Marghub

  • Counter
  • Surname or Lastname

    English (Devon)

    Counter

    English (Devon) : occupational name for a treasurer or accountant, from Middle English counter (from Old French conteor).

    Counter

  • Coulter
  • Boy/Male

    English

    Coulter

    young horse;frisky.

    Coulter

  • Marghoob
  • Boy/Male

    Indian

    Marghoob

    Desirable, Coveted, Pleasant

    Marghoob

  • Custard
  • Surname or Lastname

    English

    Custard

    English : variant of Coster.

    Custard

  • Kesiraju
  • Boy/Male

    Arabic, Hindu, Indian

    Kesiraju

    Poeter

    Kesiraju

  • Coster
  • Surname or Lastname

    English

    Coster

    English : metonymic occupational name for a grower or seller of costards (Anglo-Norman French, from coste ‘rib’), a variety of large apples, so called for their prominent ribs. In some cases, it may have been a nickname (from the same word) for a person with an apple-shaped (i.e. round) head.Dutch : status name for a churchwarden, from Late Latin custor ‘guard’, ‘warden’.Variant spelling of German Koster.This name is recorded in Beverwijck in New Netherland (Albany, NY) in the mid 17th century.

    Coster

  • Colter
  • Boy/Male

    American, British, English

    Colter

    Colt Herder; Keeper of the Colt Herd; Horse Herdsman; Variant of Colt; Young Horse; Frisky

    Colter

  • Cotter
  • Surname or Lastname

    Irish (co. Cork)

    Cotter

    Irish (co. Cork) : reduced Anglicized form of Gaelic Mac Oitir ‘son of Oitir’, a personal name borrowed from Old Norse Óttarr, composed of the elements ótti ‘fear’, ‘dread’ + herr ‘army’.English : status name from Middle English cotter, a technical term in the feudal system for a serf or bond tenant who held a cottage by service rather than rent, from Old English cot ‘cottage’, ‘hut’ (see Coates) + -er agent suffix.Probably an Americanized spelling of German Kotter.

    Cotter

  • Colter
  • Surname or Lastname

    English

    Colter

    English : occupational name for someone who looked after asses and horses, from an agent derivative of Colt. Compare Coulthard.Variant spelling of German Kolter.

    Colter

  • Exeter
  • Boy/Male

    Shakespearean

    Exeter

    King Henry V' and 'Henry VI, Part 1' and 'King Henry the Sixth, Part III' Duke of Exeter, uncle...

    Exeter

  • Marghub |
  • Boy/Male

    Muslim

    Marghub |

    Desirable, Coveted, Pleasant

    Marghub |

  • Marghuba
  • Girl/Female

    Arabic, Muslim

    Marghuba

    Coveted; Desired

    Marghuba

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Online names & meanings

  • Antea
  • Girl/Female

    Greek

    Antea

    Son of Poseidon.

  • Herringshaw
  • Surname or Lastname

    English

    Herringshaw

    English : habitational name from a lost or unidentified place, most probably in Lincolnshire or Leicestershire, named with Middle English shaw, Old English skeaga ‘copse’, as its second element.

  • Melea
  • Biblical

    Melea

    supplying; supplied

  • Atelic
  • Boy/Male

    Anglo Saxon

    Atelic

    Horrible.

  • Karola
  • Girl/Female

    German Hungarian

    Karola

  • Iphimedeia
  • Girl/Female

    Latin

    Iphimedeia

    Daughter of Triopas.

  • Aswadh
  • Boy/Male

    Hindu, Indian

    Aswadh

    Tree of Knowledge; Tree Where Buddha did Meditate and Gained Knowledge; Lord Krishna

  • Fransiska
  • Girl/Female

    Danish, Dutch, German, Swedish

    Fransiska

    Frenchman; Free Woman

  • Rajshree
  • Girl/Female

    Hindu, Indian, Tamil

    Rajshree

    Sage Like King

  • Vipashith | விபஷித
  • Boy/Male

    Tamil

    Vipashith | விபஷித

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Other words and meanings similar to

COXETER GROUP

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COXETER GROUP

  • Compter
  • n.

    A counter.

  • Coveter
  • n.

    One who covets.

  • Counter
  • adv.

    A prefix meaning contrary, opposite, in opposition; as, counteract, counterbalance, countercheck. See Counter, adv. & a.

  • Counter
  • adv.

    In the wrong way; contrary to the right course; as, a hound that runs counter.

  • Losenger
  • n.

    A flatterer; a deceiver; a cozener.

  • Covetable
  • a.

    That may be coveted; desirable.

  • Counter
  • adv.

    Same as Contra. Formerly used to designate any under part which served for contrast to a principal part, but now used as equivalent to counter tenor.

  • Fish
  • n.

    A counter, used in various games.

  • Cotter
  • v. t.

    To fasten with a cotter.

  • Culter
  • n.

    A colter. See Colter.

  • Counterrolment
  • n.

    A counter account. See Control.

  • Countretaille
  • n.

    A counter tally; correspondence (in sound).

  • Coulter
  • n.

    Same as Colter.

  • Contratenor
  • n.

    Counter tenor; contralto.

  • Cotter
  • n.

    A piece of wood or metal, commonly wedge-shaped, used for fastening together parts of a machine or structure. It is driven into an opening through one or all of the parts. [See Illust.] In the United States a cotter is commonly called a key.

  • Control
  • v. t.

    To check by a counter register or duplicate account; to prove by counter statements; to confute.

  • Counter
  • a.

    Contrary; opposite; contrasted; opposed; adverse; antagonistic; as, a counter current; a counter revolution; a counter poison; a counter agent; counter fugue.

  • Counterirritation
  • n.

    See Counter irritant, etc., under Counter, a.

  • Counterprove
  • v. t.

    To take a counter proof of, or a copy in reverse, by taking an impression directly from the face of an original. See Counter proof, under Counter.